MIG Wire Amperage Chart - Page 2
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  1. #26
    Join Date
    Mar 2013
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    1,026

    Re: MIG Wire Amperage Chart

    Quote Originally Posted by MinnesotaDave View Post
    You're working way too hard.

    I write down some common settings I like on a piece of cardboard and throw it under the door.
    Faster than fiddle-farting around a second or third time - in my opinion.

    "A dull pencil is more accurate than a sharp mind."
    Makes more sense to me as well. A couple of settings where you have both volt and wire feed speed - or A,B,C or whatever your machine shows.

    The 1 Amp per thou combined with the chart doesn't seem right either. The chart says 1/8" steel would be 200 ipm. MM252 chart according to Loui said 220 ipm. Miller welding calculator says 280-300 ipm. I have one source that says 350 ipm.
    200 to 350 ipm is a pretty wide range, making it more or less useless. Maybe better if I try it myself and then write it down and make my own chart.

  2. #27
    Join Date
    Jun 2012
    Location
    Bemidji MN
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    13,705

    Re: MIG Wire Amperage Chart

    Quote Originally Posted by Pete.S. View Post
    Makes more sense to me as well. A couple of settings where you have both volt and wire feed speed - or A,B,C or whatever your machine shows.

    The 1 Amp per thou combined with the chart doesn't seem right either. The chart says 1/8" steel would be 200 ipm. MM252 chart according to Loui said 220 ipm. Miller welding calculator says 280-300 ipm. I have one source that says 350 ipm.
    200 to 350 ipm is a pretty wide range, making it more or less useless. Maybe better if I try it myself and then write it down and make my own chart.
    Just remember that the wire feed speed is tied to the wire diameter. Faster speed for smaller wires to reach the same amps.

    Another problem is assigning a multiplier to each wire.
    This attempts to use a line to approximate a curve.

    ADD moment.....**High school math warning** - lines are linear functions where curves are 2nd degree polynomials and higher.

    Doesn't do a bad job, but it's not perfect.

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    Dave J.

    Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

    Airco 300 - Syncro 350
    Invertec v250-s
    Thermal Arc 161 and 300
    MM210
    Dialarc
    Tried being normal once, didn't take....I think it was a Tuesday.

  3. #28
    Join Date
    Mar 2013
    Posts
    1,026

    Re: MIG Wire Amperage Chart

    Quote Originally Posted by MinnesotaDave View Post
    Just remember that the wire feed speed is tied to the wire diameter. Faster speed for smaller wires to reach the same amps.

    Another problem is assigning a multiplier to each wire.
    This attempts to use a line to approximate a curve.

    ADD moment.....**High school math warning** - lines are linear functions where curves are 2nd degree polynomials and higher.

    Doesn't do a bad job, but it's not perfect.
    All the numbers quoted above was for .035" wire but sure another wire and it's another setting.

    Yes, I've seen that curve before. Another problem is that you will enter globular transfer as you go higher on wfs and voltage.

    And amperage depends on stickout and voltage depends on what gas you have too.

  4. #29
    Join Date
    Dec 2010
    Location
    SoCal-LA
    Posts
    8,877

    Re: MIG Wire Amperage Chart

    Quote Originally Posted by MinnesotaDave View Post

    **High school math warning** - lines are linear functions where curves are 2nd degree polynomials and higher.

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    Weld like a "WELDOR", not a wel-"DERR"
    MillerDynasty700DX,Dynasty350DX3ea,Dynasty200DX,Th ermalArc400GTSW,LincolnSW2002ea., MillerMatic350P,MillerMatic200withspoolgun,MKCobra Mig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig3ea.

  5. #30
    Join Date
    Jun 2012
    Location
    Bemidji MN
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    13,705

    Re: MIG Wire Amperage Chart

    Quote Originally Posted by Pete.S. View Post
    All the numbers quoted above was for .035" wire but sure another wire and it's another setting.

    Yes, I've seen that curve before. Another problem is that you will enter globular transfer as you go higher on wfs and voltage.

    And amperage depends on stickout and voltage depends on what gas you have too.
    All very true. I have also noticed that Miller prior had listed 1.6 as the multiplier for 0.035" wire, but I see lately they've switched it to 2.0.

    For 1/8" steel, they list 140-150 amps. With a 2.0 multiplier, that would be a good deal higher speed than 125 amps with a 1.6 multiplier.

    I like 150 amps for 1/8" pretty often too.
    Dave J.

    Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

    Airco 300 - Syncro 350
    Invertec v250-s
    Thermal Arc 161 and 300
    MM210
    Dialarc
    Tried being normal once, didn't take....I think it was a Tuesday.

  6. #31
    Join Date
    Jun 2012
    Location
    Bemidji MN
    Posts
    13,705

    Re: MIG Wire Amperage Chart

    Quote Originally Posted by shovelon View Post
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    Hahaha!!
    Dave J.

    Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

    Airco 300 - Syncro 350
    Invertec v250-s
    Thermal Arc 161 and 300
    MM210
    Dialarc
    Tried being normal once, didn't take....I think it was a Tuesday.

  7. #32
    Join Date
    Jan 2004
    Location
    Northern Cal., Shasta County
    Posts
    8,896

    Re: MIG Wire Amperage Chart

    ADD moment.....**High school math warning** - lines are linear functions where curves are 2nd degree polynomials and higher.
    I went to redneck high school in rural US of A, farm country. We didn't have no dayem 'polynomials' anywhere. Wurntt allowed in our town.
    "The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt

  8. #33
    Join Date
    Dec 2018
    Posts
    145

    Re: MIG Wire Amperage Chart

    The Nook-u-lar Apocalypse comes (Which is possibly, but not definitively, worse than the Zombie Apocalypse), the initial flash vaporizes your door chart, and burns the markings off the knobs...………………………………..

    The Internet is history. The scientists, who got us here in the first place, are gone. And school's out (not a great loss, they can't teach kids anything these days).

    The government is in disarray (like that's a new thing??). And Dr. Phil is a small pile of carbon somewhere in Texas (not a great loss).

    Now yer back to doin' things my way

    If I was to test a guy, I'd put him in front of a machine with unlabeled knobs, and see if he has the starch to set it up to weld.

    Here at the compound, we're ready for the Big One. Two tons of Beanie Weenies hidden in a deep bunker, semi load of Bud Light cached underground, and a good supply of Waylon 8 tracks for entertainment. There's been an ongoing debate on the Uranus Board of Directors...……………………..Charmin, or Best Choice. Survival is gonna be tough, but it doesn't have to be uncomfortable

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